不完整的實現xcode按鈕來禁用按鈕

Question

我是Objective C和Xcode的新手，請耐心等待我！我寫了一個程序來控制5個按鈕和1個重置按鈕。如果按下了5個按鈕中的任何一個，則應該全部禁用（灰顯），直到按下重置按鈕。這裏是我的嘗試：

ViewController.h

#import <UIKit/UIKit.h> 

@interface ViewController : UIViewController{ 
    IBOutlet UIButton *button1; 
    IBOutlet UIButton *button2; 
    IBOutlet UIButton *button3; 
    IBOutlet UIButton *button4; 
    IBOutlet UIButton *button5; 
    IBOutlet UIButton *resetButton; 
} 
    @property(retain,nonatomic)UIButton *button1; 
    @property(retain,nonatomic)UIButton *button2; 
    @property(retain,nonatomic)UIButton *button3; 
    @property(retain,nonatomic)UIButton *button4; 
    @property(retain,nonatomic)UIButton *button5; 
    @property(retain,nonatomic)UIButton *resetButton; 
    - (IBAction)anyButtonPressed:(UIButton *)sender; 
    - (IBAction)resetPressed:(UIButton *)sender; 

@end 

ViewController.m

#import "ViewController.h" 

@interface ViewController() 

@end 

@implementation ViewController 

@synthesize button1, button2, button3, button4, button5, resetButton; 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
} 

- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
} 

-(IBAction)anyButtonPressed{ 
    button1.enabled = NO; 
    button2.enabled = NO; 
    button3.enabled = NO; 
    button4.enabled = NO; 
    button5.enabled = NO; 

} 

-(IBAction)resetPressed{ 
    button1.enabled = YES; 
    button2.enabled = YES; 
    button3.enabled = YES; 
    button4.enabled = YES; 
    button5.enabled = YES; 

} 

@end 

但它說完全執行旁邊的ViewController，當我在模擬器中按下一個按鈕，它崩潰。請幫幫我？另外請建議任何更簡單的方法來實現這一點！

Answer 1

您的按鈕操作方法簽名在您的實現中不正確。將您的代碼更改爲：

-(IBAction)anyButtonPressed:(UIButton *)sender { 
    button1.enabled = NO; 
    button2.enabled = NO; 
    button3.enabled = NO; 
    button4.enabled = NO; 
    button5.enabled = NO; 
} 

-(IBAction)resetPressed:(UIButton *)sender { 
    button1.enabled = YES; 
    button2.enabled = YES; 
    button3.enabled = YES; 
    button4.enabled = YES; 
    button5.enabled = YES; 
}